Statistics for occurrence #1 of “Potomac river” in article pos=90 of The Daily Dispatch: April 24, 1861., [Electronic resource]:

... immediate orders. Telegraph or send by express to the Executive the name of Captains, number of men and description of force. It is further ordered that officers of all grades on the line of the Potomac river render obedience to the orders of Gen. Philip St. Geo. Cocke, who has been assigned to the command of that section of the military operations of the State bounded by said river. Given under my ...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Potomac River (United States) 286 2 0 0 0 user votes
Potomac River (Maryland, United States) 2 0 0 0 0 user votes
Potomac River (Maryland, United States) 2 0 0 0 0 user votes

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